//===-- include/Support/DataTypes.h - Define fixed size types ---*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains definitions to figure out the size of _HOST_ data types.
// This file is important because different host OS's define different macros,
// which makes portability tough.  This file exports the following definitions:
//
//   [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types
//   [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values.
//
// No library is required when using these functinons.
//
//===----------------------------------------------------------------------===//

#ifndef SUPPORT_DATATYPES_H
#define SUPPORT_DATATYPES_H

#undef HAVE_SYS_TYPES_H
#undef HAVE_INTTYPES_H
#undef HAVE_STDINT_H
#undef HAVE_UINT64_T
#undef HAVE_U_INT64_T

#ifndef _MSC_VER

// Note that this header's correct operation depends on __STDC_LIMIT_MACROS
// being defined.  We would define it here, but in order to prevent Bad Things
// happening when system headers or C++ STL headers include stdint.h before
// we define it here, we define it on the g++ command line (in Makefile.rules).
#if !defined(__STDC_LIMIT_MACROS)
# error "Must #define __STDC_LIMIT_MACROS before #including Support/DataTypes.h"
#endif

// Note that <inttypes.h> includes <stdint.h>, if this is a C99 system.
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif

#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif

#ifdef HAVE_STDINT_H
#include <stdint.h>
#endif

#ifdef __cplusplus
#include <cmath>
#else
#include <math.h>
#endif

#ifdef _AIX
#include "llvm/Support/AIXDataTypesFix.h"
#endif

// Handle incorrect definition of uint64_t as u_int64_t
#ifndef HAVE_UINT64_T
#ifdef HAVE_U_INT64_T
typedef u_int64_t uint64_t;
#else
# error "Don't have a definition for uint64_t on this platform"
#endif
#endif

#ifdef _OpenBSD_
#define INT8_MAX 127
#define INT8_MIN -128
#define UINT8_MAX 255
#define INT16_MAX 32767
#define INT16_MIN -32768
#define UINT16_MAX 65535
#define INT32_MAX 2147483647
#define INT32_MIN -2147483648
#define UINT32_MAX 4294967295U
#endif

#else /* _MSC_VER */
// Visual C++ doesn't provide standard integer headers, but it does provide
// built-in data types.
#include <stdlib.h>
#include <stddef.h>
#include <sys/types.h>
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
typedef signed int int32_t;
typedef unsigned int uint32_t;
typedef short int16_t;
typedef unsigned short uint16_t;
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef signed int ssize_t;
#define INT8_MAX 127
#define INT8_MIN -128
#define UINT8_MAX 255
#define INT16_MAX 32767
#define INT16_MIN -32768
#define UINT16_MAX 65535
#define INT32_MAX 2147483647
#define INT32_MIN -2147483648
#define UINT32_MAX 4294967295U
#endif /* _MSC_VER */

/* Set defaults for constants which we cannot find. */
#if !defined(INT64_MAX)
# define INT64_MAX 9223372036854775807LL
#endif
#if !defined(INT64_MIN)
# define INT64_MIN ((-INT64_MAX)-1)
#endif
#if !defined(UINT64_MAX)
# define UINT64_MAX 0xffffffffffffffffULL
#endif

#if __GNUC__ > 3
#define END_WITH_NULL __attribute__((sentinel))
#else
#define END_WITH_NULL
#endif

#ifndef HUGE_VALF
#define HUGE_VALF (float)HUGE_VAL
#endif

#endif  /* SUPPORT_DATATYPES_H */
